Valve



UNITED STATES PATENT .OFFIcE.

RICHARD PATTEE, OF HOLYOKE, MASSACHUSETTS.

VALVE.

SPECIFICATION forming part of Letters Patent No. 454,661, dated June 23, 1891.

Application filed November 20, 1890-, Serial No. 372.101- (No model.)

To all whom it may concern.-

Be it known that I, RICHARD PATTEE, a citizen of thelUnited States, residing at Holyoke, in the county of Hampden and Stateof Massachusetts, have invented new and useful Improvements in Stop-Cocks, of which the following is a specification.

This invention relates to stop-cocks, and pertains to that class thereof having a rotatable plug, the object being to provide such improvements in the construction of plugcocks as adapt-s them to be used on large water and gas mains without danger that the plug of the cock will become so set in the barrel as to render it difficult at times to turn it; and the invention consists in the peculiar construction of various parts of the stopcock, all as hereinafter fully described, and pointed out in the claims.

In the drawings forming part of this speci fication, Figure 1 is a side elevation of a stopcock embodying my improvements, said figure showing the lower end of a socket-wrench on the square end of the plug. Fig. 2 is a side elevation, partly in section, of the plug, its flange, and cap. Fig. 3 is a plan view of the plug and its flange on the line w 00, Fig. 2. Fig. 4 is a vertical section of the barrel of the cock and its cap. Fig. 5 is aplan view of said barrel and the plug. Fig. 6 is aplan view of the interior of the barrel-cap.

The plug-cock herein shown belongs to that class thereof in which the plug does not project beyond both ends of the barrel, but in which the lower end of the latter is closed, and whatever pressure is required to keep the plug to its bearing in the barrel is obtained by means of devices attached to the upper end of the latter.

Heretofore plug-cocks have not been used on large gas and water mains except to a very limited extent, owing to the tendency of the plugs thereof to become so set from rust, dirt, or other causes in the barrel that they can be turned only with great difficulty; but by constructing said cocks with means for imparting a slight endwise movement to the plug thereof, as below described, preliminary to turning the same to open or shut the cock sockets 3 thereon or other suitable means for connecting pipes thereto. A flange 4 is formed around the upper end of the barrel, and on the face of said flange are two segment-shaped cams 5, raised slightly above the face of the flange and having their ends 1 0 beveled off in order to give said ends such a form that cam projections on another part of the cock can easily ride or slide over the ends 0 and onto the surface of the cams 5. A cap 6 (shown in section in Fig. 4 and in Fig. 6 in innerside plan view) is secured by screws to said flange4 on the cock-barrel, as shown, said cap standing up sufficientlyaway fromthe flange 4 to leave a chamber therebetween, as shown in Fig. 4. I Said cap 6 has fixed on its inner face, as shownin Figs. 4 and 6,four cam projections 7, which, like said segment-shaped cams 5 on the face of the flange 4, are also slightly raised above the face of the cap, as more clearly shown in Fig. 4, and the ends of the cams 7 are beveled off, as are those of cams 5 and for the same purpose. It will be seen by reference to Fig. 4 that the said cam-bearing faces of the barrel and of the cap 6 when in operative position are not opposite each other, but the cams 7 on the cap occupy positions opposite the spaces .2 (see Fig. 5) between the ends of the cams 5. Said cap 6 has a circular opening K through it to receivethe hub of the plu -flange 8, as below described.

The plug 9, having the usual water-passage through it, is fitted into the barrel 2, and is rotatable therein in the usual way. On the upper end of said plug a' stem 10 stands up, having its upper end screw-threaded to receive thereon the nut 12, (see Fig. 2,) said stein being indicated in dotted lines in said figure. The said stem 10 is flanked on opposite sides by segment or other suitably-formed wings 13, above which the said screwed portion of the stem projects to an extent equal to about the thickness of said nut 12.

The above-referred-to plug-flange 8 has a hub 14 and a central perforation through said hub conformingsubstantially in plan view to the united-outline form of the stem 10 andwings 13, (shown in Figs. 5 and 3,) whereby a central passage is formed in said hub, through which said stern projects, and on opposite sides of said central stem-passage are formed recesses 15 (indicated in black in Fig. 3) between the inwardly-projecting segmentshaped parts 16 of said flange-hub, said recesses 15 receiving said wings 13 on the end of the plug. Said recesses 15 are somewhat longer than are the wings 13 on the plug, as shown by the black spaces in Fig. 3 between the ends of the parts 13 and 16, in order that the flange 8 may have a free rotary motion on-the head of the plug 9 before it engages with said'wings-13 to carry the plug with it. Theflange 8, as shown inFigs. 2 and 3, has twocams 17 (similar to the said cams 7 on the cap 6) secured on the upper side, and two cams 18 secured opposite cams 17 011 the under side thereof. Said flange 8 is secured on the end of the plug 9 in the position shown in Fig. 2 by the said nut 12, which screws against the said projections 13'on-said plug, the surfaces of the wings being somewhat below those-of said projections, so that the flange 8 may be free to move under the nut 12 or on the end of the plug, as aforesaid. A cap 19, havinga squared apex on which to place a wrench 20 the lower end'of one being shown=in Fig. 1 or other tool for turning the-said plug, is secured on the hub 1 1 of the flange 8- by screws, as shown. serves to'cover the nut 12 and the central portionof the'end of the plug and protect it from dirt or other matter that might prevent its proper operation. The said parts having been attached to the plug, as shown in Fig. 2, the capG-isremoved from the barrel or body of the stop-cock and said plug is inserted in the-barrel, and-if placed in the latter withitswater-way D in a line with the sockets 3 the cams 18 under the flanges 8 will be brought opposite the ends of the cams 5 ontheflange 4:. The'capti is then secured to the flange 4' on the cock-body, having been placed over the flange 8, as shown in'Fig. 1, the cap19 standing above the plane of cap 6; but flange-Sis left free to be turned in the space or chamber between the face'of said flange 4' and the inner side of the cap 6. When thecap 6 is placed on the flange 4-, as above described, the cams 7 thereon are brought over the said spaces 2 between the ends of the said cams 5;

Theoperation of the above-described parts, whereby the'plug of the cock is raised from its seat in'the barrel before being turned and dropped and forced back to its seat or bearing in the barrel, is as follows: The flange 8 being turned in the direction indicated by the arrows in Fig. 5, the cams 1S thereon will moveup 011 the ends of the cams 5, slightly lifting flange 8 and the plug 9, and then the Said" cap 19 engagement of said wings 13 on the plug and the projections 16 on the flange takes place and the plug rotates with flange 8 until the plug shall have been turned sufficiently to shut the water-way of the cock, and at this point the cams 18. move off from cams 5 and cams 17encounter'the cams 7 on the under side of cap 6, thereby forcing flange 8 against .the end of the plug and the latter tightly into the barrel 2, whereby it is again brought to a tight fit therein. Thus it is seen that flange .8 and plug 9 being lifted by said cam action,

the plug is easily turned and at the end of its rotary movement it is by contrary cam action forced back into the barrel of the cock. Two of cams 7 on cap-6 are provided for the said spaces between the endsof the cams- 5,

in order to bring a-camnear each-oftheends of the cams 5, so that the said endwis'emotion of the plug in the barrelwill be effected regardless of the direction. in whiclithe'plug is turned.

In stop-cooks of large size, inwhich the plug is heavy, it will drop of its own-weight into its place in the barrel: after beingilifted by the engagement of said cams -18and-5 and turned, as aforesaid, and therefore the-cams 7 on cap-6 and thecams 17on the upperside of the flange Sare not always essentialto' the proper endwise action of the plug, and may under some circumstancesbe'omit-ted.

What I claim as my inventionis--- 1. The barrel of aplug-cock,having-a'flange 4 at its larger end, said flangehavingraised cams 5 on its surface, combinedwitlra' plug 9, a flange 8, loosely connected to= said-plug, whereby it is capable of a certain degree of reciprocating rotary motion thereon and of rotating withsaid plug, having cams on one sidethereof capable of engagement with said cams 5, substantially as set forth.

2. The barrel of a plug-cock,having:a flange 4 at its larger end, said flange having. raised cams 5on its surface, combined with a cap 6, secured over said flange 4.- and having cams 7 thereon opposite the cam-bearing face-of said flange, a plug'9, a flange 8, loosely connected to said plug,.whereby it is capable of a certain degree of reciprocating rotaryv motion thereon and of rotating with said plug, having cams on its opposite sides capable of engagement with" the cams'on' said flange 4- and cap 6, substantially as set forth.

3. The plug 9, having thewings 13'on-one end, the flange 8, having cams 1S thereon, and recesses-15 therein'to receivesaid wings, which recesses are of greater length than said wings, combined with the cock-barrel having the flange 1 thereon, andraised-cams 5 on the surface of said flange, substantially as set forth.

4. The barrel of a plug cock, havingaflange l at its larger end, said flange having raised cams 5 on its surface, combined-with a cap 6, secured over said flange at and having cams 7 thereon opposite the cam-bearing face of said flange, a plug 9, a flange 8, loosely connected to said plug, whereby it is capable of a cer tain degree of reciprocating rotary motion thereon and of rotating with said plug, having cams on its opposite sides capable of engagement with the cams on said flange land cap 6, a nut 12, having a screw engagement with a stem on the end of said plug and covering said wings 13, and the cap 19, attached to 10 said flange 8 and inclosing said nut, substantially as set forth.

7 RICHARD PATTEE. Witnesses:

H. A. CHAPIN, G. M. CHAMBERLAIN. 

